WINAICO WSP?M6, Installation Manual

 

 

WINAICO

 

is

 

a

 

trademark

 

of

 

Win

 

Win

 

Precision

 

Technology

 

Co.,

 

Ltd.

 

 

www.winaico.com

 

6.2

 

Electrical

 

installation

 

 

Choice

 

of

 

module

 

Ensure

 

the

 

module

 

meets

 

the

 

technical

 

requirements

 

of

 

the

 

system

 

as

 

a

 

whole.

 

Ensure

 

that

 

other

 

system

 

components

 

do

 

not

 

exert

 

damaging

 

mechanical

 

or

 

electrical

 

influences

 

on

 

the

 

module.

 

When

 

connected

 

in

 

series,

 

modules

 

must

 

all

 

have

 

the

 

same

 

amperage.

 

When

 

connected

 

in

 

parallel,

 

the

 

modules

 

must

 

all

 

have

 

the

 

same

 

voltage.

 

The

 

modules

 

must

 

not

 

be

 

connected

 

together

 

to

 

create

 

a

 

voltage

 

higher

 

than

 

the

 

permitted

 

system

 

voltage.

 

Modules

 

must

 

not

 

be

 

fitted

 

as

 

overhead

 

glazing

 

or

 

vertical

 

glazing

 

(façade).

 

Ensure

 

that

 

the

 

mounting

 

system

 

can

 

also

 

withstand

 

the

 

anticipated

 

loads,

 

e.g.

 

wind

 

and

 

snow

 

loads.

 

There

 

are

 

openings

 

at

 

the

 

base

 

of

 

the

 

module

 

frame

 

to

 

allow

 

water

 

from

 

precipitation

 

to

 

drain

 

away.

 

Ensure

 

that

 

the

 

functionality

 

of

 

these

 

openings

 

is

 

not

 

restricted

 

by

 

the

 

format

 

of

 

the

 

module

 

installation.

 

 

Diodes

 

and

 

fuses

 

The

 

shading

 

of

 

individual

 

solar

 

cells

 

or

 

solar

 

modules

 

can

 

lead

 

to

 

the

 

shaded

 

area

 

heating

 

up

 

because

 

in

 

this

 

case

 

electrical

 

energy,

 

generated

 

by

 

other

 

parts

 

of

 

the

 

PV

 

system,

 

is

 

used

 

in

 

the

 

darkened

 

module

 

area.

 

The

 

use

 

of

 

bypass

 

diodes

 

or

 

other

 

technical

 

elements

 

to

 

bridge

 

the

 

shady

 

areas

 

results

 

in

 

a

 

reduction

 

in

 

the

 

warming

 

up

 

process

 

and

 

in

 

the

 

loss

 

of

 

performance

 

of

 

the

 

respective

 

PV

 

system.

 

WINAICO

 

solar

 

modules

 

are

 

factory

‐

fitted

 

with

 

integrated

 

bypass

 

diodes

 

or

 

other

 

design

 

elements,

 

which

 

offer

 

efficient

 

protection

 

to

 

the

 

cells.

 

 

If

 

it

 

should

 

be

 

necessary

 

to

 

connect

 

the

 

module

 

strings

 

in

 

parallel

 

then

 

please

 

proceed

 

as

 

follows:

 



 

Select

 

one

 

of

 

the

 

module

 

strings

 

requiring

 

parallel

 

connection.

 



 

Insert

 

a

 

suitably

 

dimensioned

 

protective

 

diode

 

into

 

one

 

of

 

the

 

two

 

connection

 

lines

 

leading

 

to

 

this

 

string,

 

such

 

that

 

these

 

lie

 

in

 

the

 

conductance

 

direction

 

in

 

this

 

string

 

during

 

the

 

conventional

 

generation

 

of

 

electrical

 

energy;

 

i.e.

 

so

 

that

 

the

 

electrical

 

current

 

is

 

able

 

to

 

pass

 

through

 

them.

 

In

 

order

 

to

 

attain

 

this

 

it

 

is

 

necessary

 

to

 

connect

 

the

 

diode

 

anode

 

with

 

the

 

positive

 

(+)

 

connection

 

of

 

this

 

string

 

and

 

the

 

diode

 

cathode

 

with

 

the

 

negative

 

(

‐

)

 

connection

 

of

 

the

 

string.

 



 

Once

 

work

 

on

 

the

 

first

 

module

 

string

 

is

 

complete,

 

repeat

 

this

 

process

 

for

 

all

 

of

 

the

 

other

 

strings

 

requiring

 

parallel

 

connection.

 

Then

 

establish

 

the

 

requisite

 

connections

 

for

 

the

 

parallel

 

interconnection

 

of

 

these

 

strings.

 

In

 

place

 

of

 

the

 

additional

 

diodes

 

it

 

is

 

also

 

possible

 

to

 

install

 

direct

 

current

 

string

 

fuses.

 

These

 

must

 

be

 

configured

 

according

 

to

 

the

 

maximum

 

quiescent

 

current

 

(IR),

 

which

 

is

 

quoted

 

in

 

the

 

data

 

sheets

 

pertaining

 

to

 

the

 

respective

 

modules.

 

If

 

shading

 

of

 

individual

 

module

 

strings

 

within

 

a

 

parallel

 

circuit

 

is

 

expected,

 

diodes

 

are

 

preferable.

 

 

The

 

installation

 

of

 

additional

 

diodes

 

or

 

fuses

 

is

 

necessary

 

with

 

the

 

parallel

 

connection

 

of

 

module

 

strings

 

because

 

the

 

internal

 

protection

 

measures

 

adapted

 

to

 

module

 

performance

 

(e.g.

 

bypass

 

diodes)

 

are

 

not

 

able

 

to

 

adequately

 

regulate

 

the

 

current

 

flow

 

in

 

a

 

parallel

 

circuit

 

in

 

the

 

event

 

of

 

the

 

shading

 

of

 

individual

 

module

 

strings.

 

A

 

failure

 

to

 

observe

 

this

 

may

 

result

 

in

 

the

 

corresponding

 

solar

 

modules

 

(including

 

the

 

electronic

 

components

 

contained

 

within

 

them)

 

being

 

damaged.

 

 

WINAICO

 

fundamentally

 

recommends

 

the

 

installation

 

of

 

string

 

fuses

 

(DC!)

 

with

 

both

 

series

 

and

 

parallel

 

type

 

connections,

 

in

 

order

 

to

 

protect

 

the

 

solar

 

modules

 

in

 

the

 

event

 

of

 

a

 

malfunction

 

(e.g.

 

an

 

inverter

 

defect).

 

The

 

fuses

 

must

 

be

 

configured

 

according

 

to

 

the

 

maximum

 

quiescent

 

current

 

(IR),

 

which

 

is

 

quoted

 

in

 

the

 

data

 

sheets

 

pertaining

 

to

 

the

 

respective

 

modules.